#include <vector>
#include <iostream>
#include <algorithm>

using namespace std;

vector<int> dec_to_bin(int n) {
    vector<int> result;

    while (n / 2 != 0) {
        result.push_back(n % 2);
        n = n / 2;
    }
    result.push_back(n % 2);
    reverse(result.begin(), result.end());
    return result;
}

int main(int argc, char const *argv[]){
    int n = 100;
    vector<int> result;

    result = dec_to_bin(100);
    for(int i = 0; i < result.size(); i++) {
        cout<<result[i];
    }
    cout<<endl;
    return 0;
}
